Portable multiple exercise apparatus sets

ABSTRACT

A portable set of exercise equipment that includes a pair of push-up units each having a base and a rotatable handle mounted on the base, a pair of kneepad units, and a pair of roller wheel units having a set of ball bearings around the periphery of the bottom surface thereof for allowing said roller wheel units to move in any direction on a floor, and an upwardly extending shaft for meeting with corresponding apertures in the face of said push-up units and said kneepad units for mounting either of such units on the roller wheel units for movement in an and direction on the floor. A pair of handle shafts is also provided each having a central gripping portion and extending mounting portions for mounting the bases of the push-up units on either end of one of the handle shafts and the kneepad units on either end of the other of the handle shafts for forming dumbbells.

FIELD OF THE INVENTION

The present invention relates to portable sets of exercise apparatusthat can be configured in different combinations to allow theperformance of a wide range of exercises for exercising various of theuser's muscle groups.

BACKGROUND OF THE INVENTION

Current exercise apparatus that permits a user to exercise of widevariety of muscle groups is generally relatively massive and heavy andintended for use in a fixed location. Various types of portable exerciseapparatus are known that permit a user to perform a limited range ofexercises, such as push-ups or abdominal muscle crunches, that exerciseonly one or a few portions of the body. In order for a user to achieveof full body workout using available portable exercise apparatus, avariety of different independent types of apparatus would be requiredthat, in total, would the bulky and heavy and not practicably portable.

It is also generally not practically possible with available portableexercise apparatus to controllably vary the intensity of the exercisebeing performed. For instance, a typical apparatus intended forconditioning the abdominal muscles consists of a wheel rotatably mountedat the center of a shaft, with handgrips at either end of the shaft. Theuser grasps the apparatus by the handgrips and rolls the wheel back andforth along the floor, extending the arms and upper body as a wheel isrolled forward. The apparatus is thus inherently unstable, and once thewheel has been rolled forward and away from the body, the instabilitymakes it difficult to roll it back to the starting position.Additionally, it is easy to allow the wheel to roll too far forward,which puts undue stress on the user's lower back.

SUMMARY OF THE INVENTION

In accordance with the present invention, applicant provides exerciseapparatus comprising a set of units that can be configured in variouscombinations for allowing the user to perform different exercisestargeting different muscle groups of the body, thereby to achieve a fullbody exercise. The apparatus includes a pair of push-up units, each ofwhich includes a handle mounted to a base, a pair of kneepad unitshaving a resilient upper surface, and a pair of roller wheel units, eachhaving a plurality of roller bearings distributed about its bottomsurface for providing a stable support that permits the roller wheelunits to be rolled in any direction on the floor. The roller wheelunits, push-up units and kneepad units further includes a mechanism forstablely but releasably mounting either a push-up unit or a kneepad uniton the top surface of a roller wheels unit so that the combined unitscan roll in any direction. In a preferred embodiment of the invention,the mounting mechanism includes a vertical shaft extending from thecenter of the top surface of the rollers wheels unit. Correspondingvertical holes are preferably provided in the bases of the push-up unitsand the kneepad units for mounting them on the shafts. The shafts arepreferably shorter than the thickness of the kneepad units and the basesof the push-up units so that the top of the shaft is recessed below thesurface of the base of the push-up unit and the kneepad unit when theyare mounted on a roller wheel unit.

In accordance with one embodiment of the present invention, the base ofeach push-up unit preferably includes a lower part and an upper partwhich is rotatably mounted on the lower part so that the handle can berotated by the user when the base of the push-up unit is resting on thefloor. In accordance with a preferred embodiment of the invention, thehandle of each push-up unit is detachable from the base thereof.

In accordance with a further embodiment of the invention, the apparatusalso includes a pair of handle shafts each having of central grippingsurface portion and extending portions on either end sized to fit theholes in the kneepad units and the base of the push-up units, so thatthe kneepad units can be mounted on either end of one of the handleshafts and the bases of the push-up units can be mounted on either endof the other handle shaft, optionally, in each case, with additionalweights, to form dumbbells. Removable clamps are provided to hold theapparatus mounted on the handle shafts in place during use.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an isometric view of a preferred embodiment of the push-upunit of the present invention.

FIG. 1 a is an isometric view of a pair of push-up units of the presentinvention showing the handles disengaged from the base.

FIG. 1 b is an exploded view of a push-up unit of the illustratedembodiment of the invention.

FIG. 2 is an isometric view of a preferred embodiment of kneepad unit ofthe present invention.

FIG. 3 is an isometric bottom view of a roller wheel unit in accordancewith a preferred embodiment of the invention.

FIG. 4 is an isometric top view of a roller wheel unit in accordancewith a preferred embodiment of the invention.

FIG. 5 is an isometric view of a kneepad unit mounted atop a rollerwheel unit.

FIG. 6 is an isometric view of a push-up unit mounted atop a rollerwheel unit.

FIG. 7 is an isometric view of a pair of kneepad units and additionalweights mounted on a handle shaft to form a dumbbell.

FIG. 8 is an isometric view of the base portions of a pair of push-upunits and additional weights mounted on a handle shaft to form adumbbell.

FIG. 9 shows a user in the starting position of an exercise employingkneepad units and the push-up units mounted on roller wheel units.

FIG. 10 shows a user in the extended finish position of the exercisedepicted in FIG. 9.

FIG. 11 shows a user in the extended start position of an exerciseemploying the push-up units and kneepad units mounted on roller wheelunits.

FIG. 12 shows the user in the finish position for the exercise depictedin FIG. 11.

DETAILED DESCRIPTION OF EMBODIMENTS

Referring now to FIG. 1 of the drawings, there is illustrated a push-upunit 11 in accordance with a preferred embodiment of the invention thatincludes a base 13 consisting of a lower part 15 having a substantiallyflat bottom and vertically extending cylindrical sides and an upper part17 that is rotatably mounted in the lower part 15. The handle 19, whichincludes a hand grip portion 21 and downwardly extending connectorportions 23 on either end of the hand grip portion 21 is fixedly mountedon the upper part 17. The hand grip portion 21 preferably has aresilient gripping surface made of, e.g., a rubberized or elastomericmaterial. As seen in FIG. 1 a, a pair of mounting studs 25, each havinga T-shaped cross-section, extend from the bottom surface 27 of eachconnector portion 23 for removably mounting and locking the handle 19 tothe upper part 17 by engagement in the corresponding slots 29 in thesurface of the upper part 17. A vertically extending cylindricalaperture 31 extends fully through the center of the base 13 for mountingthe push-up unit 11 on a roller wheel unit as described below.

FIG. 1( b) is an exploded view showing the internal structure of thepush-up unit 11 of the illustrated embodiment of the invention. Arotatable bearing 33 includes a lower member 35 that is affixed to thebottom of the base 15, e.g., by being bolted thereto, and an uppermember 37 that is rotatably mounted within the lower member 35. Ballbearings, not shown, in the interior peripheral area of the lower member35 facilitate the rotation of the upper member 37. The upper part 17 ofthe base 13 is attached to the upper member 37 of the bearing 35 forrotation therewith by four downwardly extending legs 39, three of whichare visible in FIG. 1 b, such legs having threaded lower ends 41 thatmate with and extend through corresponding holes 43 in the upper member37, and clamped thereto by bolts (not shown) screwed onto the threadedportions 41. The structure can be made stronger, if necessary, byproviding a rigid supporting web connecting the legs 39.

FIG. 2 shows a kneepad unit 51 in accordance with the illustratedembodiment of the invention, which includes a base 53, a resilient uppersurface 55, and a central vertical aperture 57 that extends fullythrough the kneepad unit 51 for mounting it on a roller wheel unit asdescribed below. The resilient upper surface 55 may, for instance, beformed of an elastomeric pad adhered to the base 53.

FIGS. 3 and 4 are bottom and top views, respectively, of a roller wheelunit 61 in accordance with the illustrated embodiment of the invention.The plurality of bearing members 63, in the illustrated embodiment 11,are positioned around the periphery and at the center of the bottom ofthe roller wheel unit 61 for providing stable support thereto whilepermitting movement thereof in any direction on the floor on which theroller wheel unit 61 rests. Each of the bearing members 63 includes aball bearing 65 that is freely rotatable in a housing 67. A cylindricalshaft 69 extends upwardly from the center of the top surface of theroller wheel unit 61, such shaft being sized to fit slidably andpreferably snugly in the apertures 31 and 57 in the push-up units 11 andkneepad units 51 for securely mounting and positioning a push-up unit 11or kneepad unit 51 on a roller wheel unit 61. The length of the shaft 69is such that its top surface is below the surface of the base 13 of thepush-up unit 11 or kneepad unit when they are mounted on a roller wheelunit 61.

The central shaft 69 could be replaced by any structure that securelymounts and positions a push-up unit 11 or a kneepad unit 51 on top of aroller wheel unit 61. For instance, the roller wheel unit could beprovided with an upwardly extending collar around its periphery intowhich a push-up unit 11 or kneepad unit 51 could be set. Such a collarcould, for instance, be formed as a rigid cylindrical member, or couldbe formed of flexible band that is drawn tight around the base of thepush-up unit 11 or kneepad 51 by means of clamp. Alternatively, forexample, a plurality of shafts or studs could be provided on the topsurface of the roller wheel unit 61 that would engage in correspondingholes or slots in the bottom surface of a push-up unit 11 or kneepadunit 51.

FIGS. 5 and 6 show a kneepad unit 51 and push-up unit 11 respectivelymounted on roller wheel unit 61. In this arrangement, the combined unitsare able to roll freely in any direction on the floor while the user isemploying them in the performance of various exercises.

As seen in FIGS. 7 and 8, the kneepad units 51 and bases 13 of thepush-up units 11 can be mounted on shafts 71, optionally with additionalweights 73, to form dumbbells. Each of the shafts 71 includes a centralhandgrip portion 75 and extending end portions 77 on which the weightmembers are mounted. The weight members are held in place by a clampingstructure such as the washer members 79 that are threaded onto theextending end portions 77.

FIGS. 9 through 12 illustrate two of the many different exercises thatcan be performed using the apparatus of the present invention. FIG. 9shows the starting position of a first exercise, referred to as acircular push-up, in which the push-up units 11 are mounted on theroller wheel units 61. The user kneels on the kneepads 51 and grasps thehandles 19 of the push-up units 11 with hands aligned with shoulders andspread apart. The user then rolls the hands forward along a generallysemicircular path, extending the arms and upper body and bringing thehands together at the full extension as seen in FIG. 10, and thenreturns to the starting position by rolling the push-up units 11 backtowards the knees retracing a similar generally semicircular path. Thismotion can then be repeated a desired number of times. The musclesworked in this exercise include the upper and lower abdominal, lowerback, latissimus dorsi (lats) and chest muscles, the triceps, andshoulders. The intensity of the exercise can be varied by varying thedegree of initial spread of the hands and amount of forward extension ofthe arms and upper body. The intensity can also be increased byextending the legs and placing the feet on the kneepads 51 rather thanthe knees.

FIG. 11 shows the starting position of a second exercise, referred to asan extended leg reverse crunch, in which the kneepads 51 are mounted onthe roller wheel units 61. The user grasps the handles of the push-upunits 11 and places his feet on the kneepads 51 with the body and armsextended, as seen in FIG. 12. The user then draws the roller wheelmounted kneepads forward towards his hands keeping his knees extended,and then returns to the starting position. The muscles worked in thisexercise include the upper and lower abdominal, pectoral, lower back andhamstring muscles and quadriceps and triceps.

The apparatus of the present invention can be used to perform a largevariety of other exercises, such as those listed in the following table,in addition to those illustrated in FIGS. 9 through 12. The list ofexercises in the table is only illustrative is not intended to beexhaustive.

Targeted Muscle Exercises Exercise Description Groups Single Ab RollerGrasp one push up unit11, with roller wheel upper/lower (Handles unit 61attached, by the handle 19 with both abdominals, chest, Attached) handswith the thumbs facing in each other. triceps, forearms, Place the kneeson the kneepad units 51 about shoulders, lower/upper 15 or more inchesapart, roll the push-up unit back, lats 15 forward, extending the armsand the upper body, and recover to the starting position. This exercisecan also be performed with extended legs with feet on the kneepad units51 for a more advanced workout. Push-up Flys Rest the knees on thekneepad units 51 and chest, triceps, (Push Up grasp the push-up units 11by the handles with lower/upper back, Handles roller wheel units 61attached. Roll the push-up lower/upper Attached) units 11 laterallyoutwards from the chest, abdominals, lats lowering the chest with theelbows slightly bent, and recover to the starting position. Thisexercise can also be performed with extended legs with feet resting onthe kneepad units 51 for a more intense workout. Reverse Knee Rest theknees on the kneepad units 51 with lower/upper Crunch the roller wheelunits 61 attached, while abdominals, shoulders, grasping the push-upunits 11 by the handles gluteus maximus 19. Extend knees backward,lowering the lower (“glutes”), quadriceps, abdomen towards the floorextending the lats lower body. Pull the knees forward towards the chestusing the lower abdominal muscles, lifting the glutes and lower back upat the same time Extended Legs Position the body into the push upposition, lower/upper back Reverse Crunch grasping the push up units 11by the handles muscles, quadriceps, 19, and holding them directly belowthe lower/upper shoulders, with legs extended and the feet abdominals,glutes, resting on the kneepad units 51 with the roller shoulders,chest, lats wheel units 61 attached. Pull to roll the kneepads forwardtoward the chest while maintaining the legs extended, lifting up thebody. Reverse Lunges Stand erect. Rest the right foot with kneeQuadriceps, gluteus slightly bent on a kneepad 51 with the rollermaximus, hamstrings, wheel unit 61 attached. Slowly roll the kneepadcalves, 51 backwardly bending the right and left knees at the same time,continue to roll the kneepad 51 backwardly, until both knees are benthalfway. Return to the starting position. Repeat with left foot onkneepad 51. Mountain Knee Rest knees on the kneepad units 51 with rollerquadriceps, upper/ Climbing wheels units 61 attached, Grasp the handles19 lower abdominals, hips, of the push-up units 11 with thumbs facinggluteus maximus, inwardly. Alternately roll both knees back andcardiovascular, chest, forth. This exercise can also be performed withshoulders, triceps, the feet instead of the knees placed on upper/lowerback, lats kneepad units 51 for more intense workout Kneeling With bodyerect, place both knees together on Inner and outer thighs, Abductionand the kneepad units 51 with roller wheels units gluteus maximus, lowerAdduction 61 attached. Place hands behind head or on abs hips. Rollknees apart as far as reasonably possible using outer thigh muscles,then pull knees back together using the inner thighs muscles SeatedInner Position the body in a seated position with the inner and outerthighs, and Outer Flys upper body erect, grasping the push-up unitstriceps, shoulders, 11 by the handles 19 with the arms extendedhamstrings, gluteus downwardly next to the hips. Extend both legsmaximus forward placing the heels on the kneepad units 51 with theroller wheels 61 attached. Separate legs apart as far as reasonablypossible. Then bring the legs back close together using the inner thighmuscles. Seated Position the body in a seated position with thehamstrings, triceps, Hamstring upper body erect, grasp the push-up units11 shoulders quadriceps, Extension by the handles 19 with the armsextended. gluteus maximus. Place the heels on the kneepad units 51 withthe knees extended and with the kneepad units 51 mounted on the rollerwheel units 61. Roll legs backwards towards the glutes bending theknees, then extend legs forward to their original position Elbow ChestFlys Place the forearms on the kneepad units 51 chest, upper/lower withthe elbows together with the kneepad back, abdominals, units 51 mountedon roller wheel units 61. gluteus maximus, With the handles 19 detached,place the feet shoulders, lats on the bases 13 of the push-up units 11with the body and legs fully extended in a plank position. Separateelbows apart laterally lowering the chest towards the floor, then pullelbows back together again. V-Shape Push- Grasp of the push-up units 11mounted on the chest, shoulders, up roller wheel units 61 with the armsextended abdominals, and hands directly below the shoulders andupper/lower back, about 4 inches apart with thumbs facing triceps,shoulders, lats inwardly. Rest the knees close together on the kneepadunits 51. Roll both arms forward and slowly separate them apart in a Vshape position lowering the upper body towards the floor. Then roll armsback raising the upper body back to the starting position. This exercisecan also be performed with extended legs with the feet on the kneepadunits 51 for a more advanced workout. One Arm Push Grasp the push-upunits 11 mounted on the chest, shoulders, Up Side Slide roller wheelunits 61 by the handles 19 with abdominals, the arms extended and handsdirectly below upper/lower back, the shoulders and close together. Restknees triceps, on the kneepad units 51with the body extended. Roll theextended the right arm sideways lowering the chest and bending the leftelbow halfway. Return to the starting position by retracting the rightarm back with slightly bent elbow, while the left elbow is extending.Then alternate extending the left arm and bending the right elbow. Thisexercise can also be performed with extended legs with feet on thekneepad units for a more intense workout. Ab-Solute Push With thepush-up units 11 mounted on the shoulders, chest, Up Raises roller wheelunits 61, rest the knees on the abdominals, kneepad units 51, and graspthe push-up units lower/upper back, 11 by the handles 19 with the armsextended triceps. and hands directly blow the shoulders and thumbsfacing inwardly. Simultaneously roll the extended right arm forward andbend the left elbow and lowering the chest. Then alternate, extendingthe left arm and bending the right elbow. This exercise can also beperformed with extended legs with feet on kneepad units 51 for anadvanced user. 360 Degree With the push-up units 11 mounted on thequadriceps, upper/ Push- Ups roller wheel units 61, grasp the push-upunits lower abdominals, Rotation 11 by the handles 19 with the knucklesfacing gluteus maximus, chest, forward and arms extended downwardly, andshoulders, triceps, the body extended with the knees resting onupper/lower back. the kneepad units 51. Lower the chest by bending theelbows half way keeping the knuckles facing forward. Push back up byextending both arms and rotating the push-up unit handles 19 so that theknuckles face outwardly. This exercise can also be performed withextended legs with feet on kneepad units 51 for an advanced user.Ab-Roller Push- With the push-up units 11 mounted on the chest,shoulders, up (Handles roller wheel units 61 and the handles 19abdominals, Detached) detached, rest the knees on the kneepad unitsupper/lower back, 51 and place both hands on the push-up unit triceps,quadriceps. bases 13 with the arms extended. Roll the bases 13 forward,extending the body and lowering the chest. This exercise can also beperformed with extended legs with feet on the kneepad units 51 for amore advanced workout. Ab-Solute Chest With the push-up units 11 mountedon the chest, shoulders, Flys (Handles roller wheel units 61 and thehandles 19 abdominals, Dettached) detached, rest the knees on thekneepad units upper/lower back, and place both hands, with arms extendedand triceps. wrists facing inwards, on the bases 13 of the push-up units11.; roll arms laterally apart with slightly bent elbows lowering thechest This exercise can also be performed with extended legs with feeton kneepad units for a more intense workout. Push-ups With the kneepadunits 51 mounted on the Chest, shoulders, Scissors Combo roller wheelunits 61, extend the body, arms abdominals, and legs to a push-upposition and rest feet on upper/lower back, the kneepad units. Grasp thepush-up units 11 inner/outer thighs. by the handles 19 with hands 4 to 6inches apart and separate legs widely apart. Then lower the body bybending the elbows about 50%. Push back up by extending the elbows andbring the legs together and separate them again. Repeat the process.Ab-Solute With the kneepad units 19 mounted on the Obliques, shoulders,Extended Side roller wheel units 61 and the push-up unit lower/upperabs, Crunch handles 19 detached, rest elbows on the lower/upper back,kneepad units and extend legs and body and quadriceps, chest, lats restthe feet on push-up unit bases 13. Spread elbows apart and place handson the forehead. Roll the right elbow inwardly towards the right ribcage and then roll the left elbow inwardly towards the left rib cage.Then roll the right elbow outwardly followed by rolling the left elbowoutwardly. Repeat. Push Up 360 Rest knees on the kneepad units 51; placeboth Chest, forearms, rotation with palms flat on the bases 13 of thepush-up units upper/lower back, push up handles 11 with the body andarms extended in a push- abdominals, triceps, Detached up position andwrists facing inwardly. Rotate shoulders, lats the palms so that thewrists face outwardly while bending the elbows outwards about 50%,lowering the chest. Extend elbows back up while rotating the palms sothat the fingers face forwardly. This exercise can also be performedwith extended legs placing feet on the kneepad units for a more intenseworkout. Fish-Tail Side With the push-up units 11 mounted on theObliques, lower/upper Slide Crunch roller wheel units 61 and the handles19 abdominals, lower detached, rest feet on the bases 13 and place back,chest. both forearms on the kneepad units 51 keeping the whole bodyextended. Roll the legs and lower body alternately to the left and rightsides while the upper body remains in the straight plank position. Sideto Side V- With the kneepad units 15 mounted on the obliques,lower/upper Knee Crunches roller wheel units 61, rest knees on theabdominals, kneepad units with the legs spread in a “V” lower/upperback, shape and grasp the push-up units 11 by the chest. Hips,shoulders, handles 19 with thumbs facing each other. Roll triceps,inner/outer the knees backwardly somewhat. Maintaining thighs. the kneesspread apart, alternately roll the knees and the lower body to the leftand right. Triceps Dips 360 Position the body in a seated position withthe Triceps, Shoulders, Rotation upper body erect and the legs extendedHamstrings, upper back forward and heels resting on the kneepad units51. Grasp the push-up units 11 by the handles 19 with the arms extendeddownwardly by the sides of the hips, and the wrists facing backwardly.Bend elbows outwardly to lower the glutes to the ground maintaining thewrists facing backwardly, raise the body by extending the elbows whilerotating the wrists to face inwardly. Single Ab Roller With the push-upunits 11 mounted on the Lower/Upper Abs, With Push Up roller wheel units61 and the handles 19 Shoulders, triceps, Handle detached, rest theknees on the kneepad units chest, lower/upper Detached 51 and place bothhands on the base 13 of one back, lats, glutes of the push-up units 11with the thumbs facing Maximus inwardly; roll hands straight forwardlowering the upper body. This exercise can also be performed using twopush up units 11 with each hand on separate unit, moving together, Thisexercise can also be performed with extended legs with feet on kneepadunits 51 for a more advanced workout. Push Up and With the handles 19detached from the push- Shoulders, upper back Kneepads up units 11,mount the bases 19 on either end muscles Dumbbell of a shaft 71, andmount the kneepad units 51 Shoulder Press on opposite ends of the othershaft 71, in each case optionally with additional weights 73 on bothends of the shafts, to form a pair of dumbbells, and secure both ends ofthe dumbbell handles using the threaded washers 79. Stand erect and liftthe dumbbells above the shoulders with thumbs facing in each other, pushthe dumbbells up and extend elbows.

The exercise apparatus of the present invention enjoys many advantagesover that previously available. It allows a user to perform a wide rangeof exercises to achieve a full body workout, while being inexpensive tofabricate, easily portable, typically weighing about 20 pounds, and verycompact, so that it can be packed into a small valise or suitcase. It issuitable for use by individuals either at home or while traveling, bypersonal trainers either at a client's home or at an exercise facility,and by groups at a fitness center or similar facility. The ability tovary the intensity of the individual exercises, e.g., in the mannersdescribed above, makes the apparatus suitable for use by anyone from abeginner to a highly conditioned athlete. The parts of the exerciseapparatus can be fabricated out of metal or, preferably, to the extentpracticable, out of a rigid plastic material to minimize the weight ofthe apparatus.

1. Exercise apparatus suitable for allowing the user to form a pluralityof different exercises targeting different muscle groups, comprising:(a) a pair of push-up units, each including a base and a handle mountedon said base; (b) a pair of kneepad units, each having a resilient topsurface; and (c) a pair of roller wheel units, each having a pluralityof roller bearings mounted on the bottom thereof for supporting saidroller wheel unit and allowing movement thereof in any direction on afloor; each of said roller wheel units, push-up units and kneepad unitsincluding a disengageable mounting arrangement for securely mounting apush-up unit or a kneepad unit on the top of a roller wheel unit formovement therewith.
 2. The exercise apparatus of claim 1 wherein thebase of each of said push-up units includes a lower part, an upper part,and a bearing member for rotatably mounting said upper part in saidlower part; said handle being mounted on said upper part for rotationtherewith.
 3. The exercise apparatus of claim 2 wherein said handle isremovably mounted on said upper part.
 4. The exercise apparatus of claim3 wherein said handle includes a central gripping portion and a pair ofdownwardly extending connector portions on either side of said grippingportion; the extremes of said connector portions including extensionsfor connecting and locking said handle to said upper part.
 5. Theexercise apparatus of claim 2 wherein said bearing member includes alower member fixedly attached to said lower part, and an upper memberrotatably mounted in said lower member, said upper member being fixedlyattached to said upper part.
 6. The exercise apparatus of claim 1wherein said mounting arrangement in said roller wheel unit and saidbase of said push-up unit and said kneepad unit includes an shaftextending upwardly from the top of said roller wheel unit and matingapertures in said base of said push-up unit and said kneepad unit forreceiving said shaft.
 7. The exercise apparatus of claim 6 wherein thelength of said shaft is less than the vertical thickness of the base ofsaid push-up unit and of said kneepad unit.
 8. The exercise apparatus ofclaim 6 wherein the roller bearings attached to said roller wheel unitsinclude extending ball bearings for rolling on a floor.
 9. The exerciseapparatus of claim 1 further including a pair of handle shafts eachincluding a central gripping portion and mounting portions extendingfrom both ends of said gripping portion configured for permitting thebases of said push-up units to be mounted on either end of one of saidhandle shafts and the kneepad units to be mounted on either end of theother of said handle shafts, and means for clamping said bases and saidunit to said handle shafts for forming dumbbells.
 10. The exerciseapparatus of claim 9 further including additional weights mounted onboth ends of said dumbbells.